Okay, we've got a few options. The best looks like train TR6958 that leaves Cambridge at 20:34 and arrived in Peterborough at 21:24. The price is 13.2 pounds.
Thanks! i'm also looking for a place to stay in the east.
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hotel-area train-arriveby train-day train-departure train-destination
hotel-area train-arriveby train-day train-departure train-destination
hotel-area train-arriveby train-day train-departure train-destination